Concrete pile manufacture



1937. M. M. UPSON ET AL CONCRETE PILE MANUFACTURE 3 Sheets-Sheet 2 Filed May 25, 1935 \fiiw i VENTORS flux FIG. 4.

ATTORNEYS Nov. l6, 1937. M, M, UP N ETAL 2,099,285

CON-CRETE FILE MANUFACTURE Filgd ma zs, 19 56 5 Sheets-Snet s HG. Z W 14 INVENTORS ATTORNEYS Patented Nov. 16, 1937 i 1 it 2,099,285 3 CONCRETE'PI'LE MANUFACTURE V} ji Ma xwellv Upson, Englewood, and Edward 'A.

' Smith, Chatham,N. J., assigncrs to Raymond Concrete; Pile Company, New York, N. Y., a

mazes.

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corporation ofNew Jersey? eQtiQns ot-adrive.core. A plow ring was provideda the bottom of each section in order to plow 'a'pathion the -shell. section above it, thus protecti-ng;.-thethin shell from wear and tear.

'Ilhe iinished pi-le; was of. decreasing; diameter from n qr otto m 1 I 5' -7 I -t, is i'sometiines desirable-to produce a'very long pileofguniljorm diameter; throughout its lengt; ith'o tgthe steppedtaper of the above mentioned; patent,,andthe-present invention teaches how that may} be done. The drive core iseylindricaliand is provided with sets of drivingshoulders at intervals along its length. The ShBlI riS offlilnifQlm diameter. but" ismade up of sections, each section being pulled down by a plow ring; at'itslower end, the-ring being adapted for engagement by; one of-.-the sets of shoulders on the core. 'I'hisymethod, keeps downcost because very -t hin; shellg matei ialmay be used, which would;-not. ;be possible; ;-the shell were pushed or driven into the ground, as has usually been heretofore done with extra long shells.

Further andother objects and advantages will be apparent from the specification and claims, and from the accompanying drawlngs which illustrate what is now considered the preferred embodiment of the invention.

Fig.1 shows an uncorrugated shell after it has been driven and. before withdrawal of the core.

' Fig. 2 is an enlarged sectional view of a portion of shell and core.

Fig. 3 is a fragmentary detail still further enlarged. v

' Fig. 4 is a view on line 4-4 of Fig. 3.

i Fig. 5is a view on line 5-5 of Fig. 2 with core in driving relationship with the shell. Fig. dis a view similar to Fi 5 but'with core 45' rotated to position for removal.

Fig. '7 is an enlarged detail of the lower end of shell and core. 1

Fig. 8 is a, cross-section of an embodiment of the invention'in which the shell is corrugated,

and in which the drive shouldersare modified.

Fig. 9 is a view on line 9-9 of Fig. 8.

In the drawings (Figs. 1-7) i is the cylindricaldrive core having a drive head I2. For convenience, the drive core is made hollow. The

shell, which remains in the ground after removal Ah fi atmn. May 23, 1936, Serial No. 81,362

(61. f6 'I .-'---5"7 V of the v core, comprises, anumber of comparatively short sections I4 preferably of equal length and each attached at its lower end to a ring Hi, the functions of; which will be explained. The shell sections [4' may be plain (Figs. 1-7) or corru- 1 ated (Fig. 8;), as desired.

Each ring I6 is p ovided with, four inwardly extending lugs 20.- Welded to the drive core are setsof longitudinal plates 2 2", the same in number and similarly spaced as lugs so that during I driving the bottomof each plate 22; which forms a. shoulderion the drive core, may rest ona lug 20, There are as many sets of plates 22' as there are; rings and: she'll sections 14.; Plates 22 extend lon itudinally on the core from one ring to the next, and-the upperv ends of; the plates are bevelled as at 24 for a purpose that will-appear. Lugs 20- are of such 'dimensions'circumferentially as-to leave spaces between them through which plates, 22- may pass vertically when they are in alignment with the spaces. Each; ring I6.- has upwardly and downwardly extending fins 2;.6 and- 28, respectively. Ring l6 maybe of greater-diameter than shell section 14 in order to serve as a plow therefor. The lower end ,ofeach-shell section His welded or riveted asat aofto fil'l 26, and they upper end of each shell section is a slip fit on fin 28 of the ring above it, thus automatically taking care of any slight variations of length of the shell sections. Each ring IE may be provided with an ear 32 which enters a notch 34 in the top of the section I4 below it, in

order to vertically align the several sets of lugs 20 (Fig. 4).

A shoe 36 (Fig. 7) is fitted over'the bottom of the drive core and cooperates with a circumthe bevelled upper ends 24 of plate 22 engage their corresponding lugs 2!! and force the parts into proper driving alignment, as is best shown in Figs. 1 and 2, the bottom of each plate 22 resting on a lug 20., When the driving operation is completed, and the shell sections are firmly held by the ground, a straight upward pull on the core will firstcause bevels 24 (acting against lugs 20) to rotate the core until plates 22 assume the positions of Fig. 6, and then cause them to pass'upwardly between lugs 20.

Fig. 8 shows a modification in which drive plates 22 are replaced by simple shoulders 40 welded to the core, and in which corrugated shell sections are used. The corrugated sections have the important advantage of being to a certain extent self-adjusting as to length, so that no slip joint is needed on the plow ring fin 28. The bottom of 5 each spirally corrugated section 42 is welded or riveted as at 44 to the upper fin 26, and a short coupling member 46 is similarly attached as at 48 to the lower fin 28. Then the top of lower section 42 is screwed onto coupling 46. Marks or notches 50 and 52 on ring l6 and on the shell section indicate when the rings are in proper vertical alignment.

It'is to be understood that the invention is not limited to the specific embodiments herein illustrated and described, but may be used in other ways without departure from its spirit as de. fined by the following claims.

We claim:

1. In apparatus for forming a concrete pile, a V

drive core having sets of spaced-apartshoulders at intervals along its length, in combination with a pile shell comprising a plurality of rings each having a set of,internal lugs, each lug being adapted for engagement by one of a setfof said shoulders, and each ring havingashell'section secured thereto ,and extending upwardly to engage the ring next above it. V v

2. The invention set forth in claim 1 in which Y the shoulders of each set and the lugs of each 0 ring are alike in number and in circumferential spacing and in which means is provided on the core for maintaining said'lug's and said shoulders in vertical alignment. P

3. The invention set'forthin claim 1 in which 35 means is provided on the core whereby vertical movement of said core causes rotation of said shoulders relatively to said lugs.

, A. In apparatus for forming a concrete pile, a'

drive core having sets of longitudinal plates on 40 the outer surface thereof, the lower ends of which form sets of spaced-apart shoulders, in combination with a pile shell comprising a plurality of plow rings each having a set of internal lugs,

each lug being adapted for engagement by one 45 of a set of said shoulders, and each plow ring having 'a shell section secured thereto and extending upwardly to engagethe plow ring next above it. r r

5. The invention set forth in claim 4 in which the upper ends of said plates are bevelled, wherea by after the driving operation, upward motion of said core will cause said bevelled ends to rotate said core relatively to said lugs.

6. Apparatus for forming a concrete pile, comprising a shell formed of afseries oflthin metallic sections of uniform diameter and adapted to remain in the ground to be filled with concrete, a plow ring at each'joint between said sections, means for operatively connecting each plow ring to the'shell section above it, and circumferentially spaced lugs on theinside of said plow rings, said lugs being adapted'for engagement by shoulders on a drive core, whereby said shell sections are drawn down into the holes formed by their corresponding plow rings.

'7. Apparatus for forming a concrete pile, comprisinga shell formed of a series of spirally corrugated sections of uniform diameter, and adapted to remain in the ground to be filled with concrete, a plow ring at each joint between said sections, means for connecting each ring to the shell section above it, and means comprising a spirally corrugated coupling member projecting downwardly from each ring for engaging the upper end of the shell section below it, the said connecting means and the coupling member being so located upon the plow ring that uniform corrue gated sections when connected'with the plow ring are positioned'in proper vertical alineme nt.

8. Apparatus ,for forming a concrete pile, com prising a shell formed of a series of spirally corrugated "ections of uniform diameter, and adapt: ed to remain in the ground to be filled with conmate, a plow ring at each joint between said sec tions, means for connecting-each ring to the shell section above i t, and means comprising a spirally corrugated coupling member projecting downwardly from each ring for engaging the upper end of the shell section below it, each coupling member having an outside;dimension substantially-equal to the outside dimension of the connecting means for each-ring and the shell section above it, substantially as described;

' r MAXWELL M. UPSON.

EDWARD A. SMITH. 

